Splitting machine



W. (17 BAXTER Dec. 15, 1931.

SFLITTING MACHINE Filed Nov. 27, 1929 6 ShEEtS-SIIGG'L Dec. 15, 1931. w. c. BAXTER SPLITTING MACHINE 6 Sheets-Sheet 2 Filed NOV. 27, 1929 Dec. 15, 1931. w. c. BAXTER 1,836,149

SPLITTING MACHINE Filed Nov. 27, 1929 6 Sheets-Sheet 3 Dec. 15, 1931. v u w c, BAXTER 1,836,149

SPLITTING MACHINE Filed Nov. 2'7, 1929 6 Sheets-Sheet 4 L,- I mmmwwimzm 99 J 1 Dec. 15, 1931. w. c. BAXTER SPLITTING MACHINE Filed NOV, 27, 1929 6 Sheets-Sheet 5 INVENTIIIR Dec. 15, 1931. w. c. BAXTER 4 SPLITTING MACHINE Filed NOV 27, 1929 6 Sheets-Sheet 6 INVENTUR Patented Dec. 1 5; 1931 f UNiTE [ST TES PATENT- CHECK;f

WILLIAM a imxrnn-on'innvnittm'nnssaoiinsnr'rs, Ass'mmmawm snonnA- GHINERY com-cannon, on rnrnnson, NEW JERSEY, n oonroaa'rroiv on NEW? JERSEY "srm'r'rme neonnm e anation med nbvemti a'z, 192s. seriarno..4io,1so. 1

This invention relates to splitting. Inachines and is hereinillustrated as embodled in a machine adapted to splitthe heel end of.

..a shoe sole to form a flap'which, in the lin- 1 .ished shoe. is bent down and attached to the breast, of a wooden heel.

In machines of this type the sole is commonly pressed against a support in a locality close to'the edge of a knife, and then either the blankorthe knife Y is moved first in a direction to cause the knife to enter the blank to form the, flap,.and then in the opposite di rection to cause the knife to be withdrawn from the blank, It is desirable that, when the knife is being withdrawn from the blank the pressure upon the blank should be relieved, since at that time. the thin flap has already beenformed and is liable to be ,dlS-

torted. ,According to one feature of the in vention the construction of the machine is such that the pressure may be relievedduring the time that theblankis being withdrawn. In the illustrated machine the knife" is a sta-- tionary one, and the blank is fed over a Work table to the knife by a feed roll Which is 1'0- tated first in one directionv and theni'nthe other. The .roll presses the blank against the table ina locality close tot-he edge of the I knife andfacts firstxto feed the blank for a given distance to'the knife to cause the knife to enter the blank and thento withdraw the blank from the knife. During this withdrawal, after the flap has been formed, the work table is dropped slightly so as to relieve the pressure upon the blank.

, Inprior application Serial No. 223,968 filed in my nameOctober l, 1927, which has beconiei United States Letters Patent .No. 1,7 47 ,282, there is disclosed a sole having-at its rear end two flaps, a very thin flap :Which is all grain and is -designedto betorn olfland discarded after the shoe inwhich the sole is incorporated has been nearlyfinished, and a thick flap partly of grain and partly offlesh which is designed to be attachedin the usual manner to the. breast of a wooden heel. 'The thin flap serves merely as a protective covering for the adj acent surface of the thiclr'flap during the manufacture 90f the shoe. Ac cording to another feature of the invention mechanism is provided for automatically forming a plurality of flaps on'a blank when desired. In the illustrated machine the.

blank is caused tobeoperatedupon tgopro-j l i the positionof the blank du'ce in it' two cuts,

with reference to the knife being changed between the times the cuts are made to locate the cuts at different levels in theblank so to produce two flaps;

"Inorder to facilitate'tl eproper ta g r ti'on ofa blank to thef eeding means'thereis provided in combination" with means for feeding a blank {to and fromthe knife, means for presentingthe blank to the feeding means. In theiillustrated.machinejthisf pre;

senting mechanism' takes the form of al s'li de which is driven from. the roll whijo'h' feeds the blank to and then withdraws it from the knife so that, when the feed roll rotatesin one direction the slide moves forward, and When moves back into initial position."

the direction ofthe roll is eversed,the slide;

These and other features offthef invention.

including certain details of constructionandj comblnations of parts will be 7 described as embodied in an illustrated machin'efa'nd pointed out in the appended claims. 1

I Referring now tolthe accompanying draw ings,

Fig. 1 g wh ch the present invention is embodied;

is a side elevation of a machine in Fig. 2 is a front elevation of the machine,

3 is a plan ofthe machine; lilg. 4 is a vertical sents the solesto thefeed roll F1 6 is a another s 7 is a front elevation ofthis same shift ing mechanism showing also the roll andthe C cams;

' Fig. -8 "is a s'e ctional view of one of section ontheiine IVs-IV of Fig. 3, certain parts being shown in full linesg .1

perspective of the for s ifting a cam roll from one cam to"? Fig. 9 is an elevationof the other cainfand Fig. :10 .is'atfirspective ofthe heel endof. 5%

a sole having formedu'pon it two flaps.

The illustrated machine is capable of forming upon a sole 100 (Fig. 10) two flaps, a comparatively thick flap 300 which is bent down and attached to the breast of a Wooden heel in the finished shoe and a very thin flap 200 which serves to protect the adjacent surface of the thick flap during the manufacture of the shoe and is torn ofi at the end of the manufacture. By this procedure the surface of the thick flap which is exposed in the finished shoe does not need the usual buffing operation to clean it. As will be explained later the machine may also be operated to produce upon a sole a single flap; and in either case two soles may be operated upon at the same time.

Referring first toFigs. 4 and 5, two soles 100 are fed twice forward and back over a table 11 to a stationary knife 13, the soles being thus twice presented to the knife and twice withdrawn therefrom in such manner that the two outs form respectively the two flaps 200, 300 (Fig. 10) referred to above, the thin flap 200 bein preferably composed entirely of grain and the thick flap 300 partly of grain and partly of flesh. The knife is held in fixed position; and the location of any given cut in the sole depends upon the level or height of the table 11 above the edge of the knife. In Fig. 10 the sole is shown grain side up; but in the machine the soles are fed grain side down over the table to the knife. During the first cut the table is in lowered position to make the out which is lowermost in Fig. 10. The table is then raised and held raised while the cut is made which is uppermost in Fig. 10. In other words there is first produced a flap equal in thickness to the combined thicknesses of the flaps 200, 300; and then upon this flap is formed the thin flap 200.

The soles are presented over the table 11 by a feed slide, which will be described later, to a feed roll, said roll then acting to feed the soles to and withdraw them from the knife twice. Referring still to Fig. 4 the feedroll is an internally yielding one comprising a series of metallic rings or sections 15 mounted upon a layer of rubber 17, the rubber being mounted upon a layer of canvas 19 which is in turn mounted upon the shaft 21 of the roll. Fast to the shaft at each end of the roll is a hub; and mounted in these hubs and extending lengthwise of the roll just outside the rubber layer 17 are three bars 23, shown in cross-section in Fig. 4:. Each metallic section 15 has in its inner edge three notches which are slightly larger in crosssection than are the bars. a yielding, sectional one particularly adapted to this type of splitting machine in which the soles are supported upon an unyielding work table during the splitting operation. As has been explained, thethickness of the flaps produced is determined by the height The roll is thus of the work table, the edge of the table adj acent to the knife being thus a gaging edge. The yielding roll holds all parts of the soles in the locality of the knife flat against the table irrespective of whether the soles are of uniform thickness. It will be understood, however, that the two soles which are being fed at any given time are of approximately the same thickness.

The shaft 21 of the roll (Fig. 1) is rotatably mounted in an arm 25 which is pivoted about the axis of a rock-shaft 27 so that the roll may be swung about the axis to ad- .just the height of the roll above the work table to provide for soles of different thicknesses. The roll is held in adjusted position by two rods 29, 31 (Fig. 2) which are connected respectively with the feed roll shaft 21 near opposite ends of that shaft. Inasmuch as these rods and their mountings are substantially alike only one of them will be described in detail. The rod 29 (Figs. 1 and 2) at its upper end is threaded into a depending stem 33 of a collar 35 which is loose on the roll shaft 21. At its lower end the rod 29 (Fig. 4) passes loosely through a sleeve 35 and has at its lower end a nut 37 between which and the lower end of the sleeve 35 is a coiled spring 39. The sleeve 35 is threaded through a cross-bar 41 which is fast to the legs of a yoke 43, said yoke having a horizon tal bore to receive an eccentric 4E5 fast to a rock-shaft 47. The rod 31, as may be seen by an inspection of Fig. 2, is mounted in the same manner as the rod 29. When, therefore, the shaft 47 is turned in one direction or the other, the eccentrics act to pull down or push up on the rods 29, 31 and thereby to lower or to raise the feed roll. In order to provide means for turning the shaft 47, said shaft has fast to it a worm gear 19 (Fig. 4) which meshes with a worm 51 fast to one end of a short rotary shaft to the other end of which is fastened a hand wheel 53. The feed roll is thus normally held down in the position shown by the coiled spring 39 on the rod 29 and the similar coiled spring on the rod 31; and the tension of these springs may be varied by turning the sleeve 35 through which the rod 29 passes or the similar sleeve through which the rod 31 passes.

As has been stated above, the work is fed to the knife to cause a cut to be made in the work and is then withdrawn from the knife. infeeding and outfeeding, the feed roll is rotated first in one direction, and then in the reverse direction. To this end (Fig. 1) a gear 55 fast to the feed roll shaft 21 is engaged by a segmental rack 57 carried at the outer end of an arm 59 the inner end of which is fast to the rock-shaft 27 Pivoted at 61 to this arm is the upper end of a link 63 the lower end of which has pivoted to it a square block 65 (Fig. 7) said block In order to produce this alternate 1 sesame being adjustable inwa radial .guidewayina heavy disk 67 which is fast to a horizontal rotary-shaft-69 to which'either one-revolution or two revolutions may. be'impartedxas will presently appear. The position of .the block in the radial .gui-deway determines the throw of the link '63, the amplitude r015 angular movement of the arm 59 andwthe extent ofgrotation first in one direction. and then in the other of the feed roll. In order to adjust the block 65 in the radial guide.

way in the disk 67., a screw 71 is threaded through the block, said screw having at the end nearest the block a square head 73 by which it maybe turned The other end of the screw has an enlarged end 75, which is received in abor'ein the solid disk :67 said head being. provided with a circumferential groove 77 into which" extendsthe end jof a small screw 7 9 threaded through one side of the disk. The screw 71 is thus 'ro-tatably mounted in the disk but, held fromlongitudin-al movement; and, when the screw is turned the block 65, which is pivotally mounted on thelower end of the link 63, is inolrged toward or from the center of the Thejtable 11 "which has a hardened plate set into it beneath the feed roll (Figs. 3, 4 and and over which the soles are fed to the knife, is adjustable upand'downto 7 determine the thickness of the flap orfiapsto be produced and may also be moved up or.

' The bracket 81 carriesat itstop a horizontal guide bar 87 having in itsupper parta groove rectangular in cross-section, there being a thin plate 89 fastened to the bar and extending ever part of the groove to forma guideway for the suitably shaped lower portion of a rack-bar 91. The bracket, carries at its top .aguide ba-r 93 similar to the guide bar 8? and provided with a thin plate' 95 similar to the'plate 89 to form a guideway for a second rack bar'97 similarto the rack bar 91. Referring now to Fig.

5, the guidebar 93,the plate 95 and therrack A bar. 97 are shown in perspective, The. two

rack bars 91, 97 (Fig; 3) areconnected at their rear endsby a:p-late 99 the down-turned ends of which are fastened respectively by screws lOland 103 to therackbars. Formed in this plate 99 is an undercutguideway 105 .tion.

and turning the thumb-hold 129, which is fast to the small upright shaft 111, the oar-j a carrier 10$? for the thelsoles.

a slot 109 through which passes .12. short up- (F ggrippers which engage right adjusting shaft 111. Thisshaft 4) extends-down through the plate .99and has a headed scnew 113 at its lower end About half way up on the shaft 111 is fastended a small gear l15-which rests upon the top of the stem of the carrier 10? :and meshes with a rack 117 which is fast to said stem. A locking pawl 119 is pivotedat 121 to upstanding lugs formed one small block 123 which is adjustable in a groove 125 in the plate99 and is held in ad' iusted' position by. acap screw 127 the stem of which passes through a slot in the block 125 and is threaded into the plate 99.. The locking:

pawl 119 has teeth to engageteeth formed on the rack-bar 117 on the opposite side of the bar from thezteeth which are engaged bythe small gear 115. Aspiring (notshowny which is coiled about the small pivot 121 ofthe locking pawl and'has one end resting uponthe plate "99sand the other end bearing against the under side of the tail of the pawl normally holds the pawl in operative posi- Byi pressing upon the tail of thepaavl rier 1017 may be adjusted forward andhack;

and, when the pawl is released, the carrier is locked inadjusted position.

Referrmgnow more 3 and 5, the mounting upon the carrier 107 of the means for gripping the soles 100. "will be described vMounted in suitable bearings in the carrierlO Z is :a horizontal rock-shaft 1 31, and fast to thecarrier 107,'belowthe rock-shaft, are two thin flat plates 133,

eaeho'f which is the stationary member ofa pairof grippers. The toe ends of the soles.

are held respectively against "the plates133. 135 by angularly movable grippers 137, 1 39. These grippers are loosely mounted upon the rock-shaft 131 and urged at all times toanove ina direction to press the toeends-ofthe soles against the plates 133, 135 by springs 141,

143 which are coiledabout the rock-shaft 131 and have their lower free ends resting upon" the carrier 5107 and their upper freeends engaging respectively'the gripper 1 37 and the? gripper 139. :The grlppr137 has a thumb piece 145 depression of which lifts the gripper; and the gripper 139 has a sim-i ilar thumb-piece 1417. Thus either. gripper V in which. is lslidably. flnounted the stemref The-stem of the carrier has in it particularly to Figs. 1

maybe'raised independently of the otherif; 7

desired. 7 .In order topermit the two grippers .137, 139 to be lifted together, there is fast to the middle of the rock-shaft 131 by means of a pinch-screw 149 .a block 151 car-1 lying a pin 153 the opposite ends of which extendrespectively beneath the grippers 137,

139:;Land fast to the rock-shaft 131 issaithird thumb-piece 1 55 by which the shaft may be rocked toraise. the grippers together.

The feed slide, which comprises the racks 91, 97, the plate 99, the carrier 107, the rockshaft 131 and the two pairs of grippers 133, 137 and 135, 139 is moved forward and back in a manner presently to be described; and means are provided for raising the grippers 137 139 automatically, if desired, at the end of the backward stroke of the slide in order to free the soles which have just been operated upon and to permit two other soles to be placed with their toe-ends upon the plates 133, 135. This means comprises (Fig. 5) an arm 157 fast at its upper end to the rockshaft 131, a toothed bar 159 and a stop 161. The bar 159 is pivoted at one end at 163 to the stationary guide 93 and passes through a slot in the lower end of the arm 157, being supported at that locality by a smaller roller (not shown) mounted upon a pin 165 which passes through the slotted end of the arm 157. The stop 161 is slotted in its upper portion and has pivoted at 167 a spring-pressed pawl 169 which engages the teeth on the bar 159. By pressing upon the tail of the pawl to free it from engagement with the teeth, the stop 161 may be adjusted into desired position on the bar 159. This stop, when used, is adjusted into such a position that the arm 157 contacts with the stop just before the feed slide reaches the limit of its backward stroke so that, when the feed slide is completely retracted, the grippers 137, 139 are raised.

This stop is preferably used only when a single flap is being cut, andthe feed slide therefore makes but one reciprocation.

The racks 91, 97 of the feed slide are driven from gears 171, 17 3 (Fig. which are fast to the feed roll shaft 21 one near each end of said shaft. Inasmuch as the two connections between the gears 171, 173 and the racks 91, 97 are substantially alike, only one of them will be described in detail. Referring first to Fig. 4, the rack 91 meshes with a pinion 175 which is driven from a second pinion 177, said second pinion being driven from the gear 171 on the feed roll shaft. The pin ions 17 5, 177 are rotatably mounted in an arm 179, the hub of which (Fig. 3) encircles the feed roll shaft 21. The purpose of this construction is to permit the feed roll to be adjusted up and down in the manner which has been described without disturbing the driving connections between the feed roll and the racks of the feed slide. In order to hold the pinion 17 5 always in mesh with the rack bar 91, a depending portion of the arm 171 has a roll 181 which runs in a horizontal guideway. The guideway for the roll 181 is not clearly shown in Fig. 4; but the corresponding guideway for the roll which corresponds to the roll 181 on the other side of the machine is shown in Figs. 1 and 5 at 183, the upper wall of the guideway being formed by the under side of the plate 95. It will be understood that the extent of up and down adjustment of the feed roll is not great; and that the extent of horizontal movement ofthe roll 181 is very small. In Fig. 1 the two pinions 377 and 375 which correspond to the pinions 177 and 175 are shown.

\Vith this construction, each time the feed roll is rotated first in one direction and then in the other, the soles are first fed to the knife and then withdrawn therefrom. Assuming that the extent of oscillation of the feed roll is uniform the lengths of the cuts formed in the soles are determined by the original position of the soles; and this position may be varied by adjusting the grippers 135, 139 and 137, 133 (Fig. 5) toward or from the feed roll by rotating the small upright shaft 111 in the manner which has been described. t will be noted that what is really determined is the distance from the toe end of the sole to the inner end of the cut, since the soles, as shown in Fig. 4, always have their toe ends in contact with a vertical face on a downwardly extending lug of the carrier 107 on which the grippers are mounted.

As has been explained above the thickness of the flap produced by a cut of the knife depends upon the level of the table 11 at the time the cut is made. In order to permit the level of the table to be changed so as to determine the thickness of a flap as well as to relieve the pressure of the feed roll upon the work during the backward stroke of the table when the work is being withdrawn from the knife, the table is mounted for up and down movement.

Referring more particularly to Figs. 2 and 4, the table 11 is bolted to the upper horizontal portion of an angle-plate 185, the depending portion of the plate being slidably mounted in a carrier 187, which in turn is pivoted at 189 to the frame of the machine. The carrier 187 (Fig. 2) is held in adjusted angular position about the axis of the pivot 189 by cap screws 191 which pass through slots in the carrier and are threaded into the frame of the machine. The lower end of the carrier 187 is cut away to produce a sort of fork between the arms of which extends a boss 190; and adjusting screws 192 threaded through lugs on the carrier 187 engage this boss. By this means a very fine adjustment of the carrier may be made. The purpose of making the carrier, and with it the work table, adjustable about the pivot 189 is to make it possible to bring the inner edge of the table into parallelism with the adjacent edge of the knife even though the edge of the knife, due to imperfect grinding or to some other cause, is not exactly horizontal. It will be understood that the extent of this adjustment is usually very small, but that the capability for such adjustment is highly desirable since some ofthe flaps/which are :pro-

duced upon soles are not more than five onethousandths of an inchithick. g

The depending portion of the angle plate 185, which supports thefwork table 11, is slidablc up and down upon 'th'e carrier 187, as has been. stated, its side edgesbeing engaged and guided by ribs formed along the 1 sides of the carrier, and said depending porticn being held down upon the carrier by a. narrow plates '193whichare fastened by bolts .1 195 to the tops of the ribson the carrier. The

w cams on the shaft san indicated respective- 1'3 209 arisen; The dependingarmof the angle'plate185 has at its lower edge a hardcned plate197 with which contacts an adjusting screw 199. By setting this screw in different positions theextent to which the work table may descend mayj be controlled.

1 In producing the two flaps 200, 300 shown in Fig. 10 the sole is fed, with the grain side (the upper-side in Fig, 10) down, over the work table 11. During the first Oscillation of the feed roll the cut between the flap 300 and the sole. is made to producea flap equal in thickness to the combined thicknesses of the flaps 200, 300. Ordinarily this first flap is about thirty-five thousandths of an inch thick; Before the second cutis made the work table is raised so that the flap 200 is very thin, being commonly about five thou-V sandths of an inch thick.

In the position of parts shown (Fig. 4) the screw 199 is supporting the work table 11 in position to'produce the first out in the soles.

During the first revolution of the shaft 69 and the first reciprocation of the soles this first cut is made in each sole to produce a flap equal to the combined thicknesses of the two desired flaps. ,During the second reciprocation of the soles, the table 11 is raised by a plate 185 and hasthreaded through its outer end a screw 203 which engages a secondhardened plate 205 on the angle plate. Dur=- ing the first cut when the work table 11 is held inlowered position the bell crank lever does not actuate the table 11 at all but, just before i the second out, it raises the table as has been explained. 7

The mechanism which moves the bellcrank lever 201 in the manner described The dOWIb wardlyextending arm of the bell-crank le above will now be described.

vol" 201 carries a roll 20'? (Fig. 4:) which may run on either one of two cams, mounted upon the shaft 69; Referring to F ig'. 7, the two size so that two revolutions-of the gear 221 bell-crank 'lever 201 is forked asashownand has mounted in alined holes in the ends "ofv the forks a sleeve 213 upon which is rotatably mounted the roll 207. This roll, which is also slidable on the sleeve 213, is held in the a position shown, in which it runs on the roll 209, by arod 215 having a radialpin'217 which projects through a slot 219 in the sleeve into an internal circular groove in theroll. 207. Thus, by moving the pin horizontally, the roll 207 may be shiftedinto'contact with the cam 211. and back again into conta'ctwith the cam 209. The cam 209 has no eifect'updn the work table 11' duringtheifirst cut; but is. effective, as will presently be'expl'ained when 3 single out and asingle flap are to be prouce The mechanism for moving the rod 215 to a draw them from the knife twice, is fast a gear 221 which meshes with a gear 223 of twice its cause one revolution of the gear 223.' This gear 223 is fast to a barrel cam 225whieh-is rotatably mounted upon a short stationary shaft 227, being held thereon by acollar 229 fastened to the shaft by a set screw 231. The cam 225 has in its periphery a cam track into which projectsa small roll235cari'i'ed at the outer end of a small T011 237 which is slid ably mounted in an upright lever 239 pivoted at its lower nd'about a rod 241 carried a stationary bracket 242- The small rod2 37 has fast to it a collar 243 and a head 245*, the rod together with the small roll 235 beifl held in the position shown by a plate 247 justably mounted upon the bracket 242 y y means of a cap screw 249 the stem of which passes thorugh a vertical slot in the pa e and is threaded into the bar'cket. It should be noted that this plate 247 has a notch in its upper edge, and that by loosening the capscrew 249, lowering the plate, pulling out the" rod 237 untilthe collar is outside the plate, and then raisingthe plate, the roll 235* may be held withdrawn from the; cam. track 233 when desired. The purpose of doing this, as will be described later, is to cause the soles to be fed to and from the knife'once so as to product upon each solo a singleflap; and i i this case the height of thework table 111 is; governed bythe cam 20% The upper end of the lever 23-9 carries the stem of a collar 2511" which encircles the rod 213 andhas init a bore" considerably larger in diameter than that of the rod so thatvthe rod may'mov'e' 1 and forth in the direction of extent of its axis.

Referring now to Fig. 7, which shows the parts of the machine in their normal position of rest, the cam track 233 is so shaped that when one revolution is imparted to the cam 225 by two revolutions of the shaft 69, the roll 207 remains opposite the cam 209 until nearly the end of the first revolution. It is then shifted into contact with the cam211 and remains in that position until nearly the end of the second revolution of the shaft 69 whereupon it is returned to the position shown as the machine'comes to rest.

During the first revolution of the shaft 69 the soles are first fed to the knife and then withdrawn therefrom. During the making of this first cut the work table remains at its lower level with the hardened plate 197 on the angle-plate 185, to the upper portion of which the table is fast, resting upon the screw 199 (Fig. 4). During the withdrawal of the soles'from the knife the roll 207 is shifted to the right (Fig. 7) into operative relation with the low part of the cam 211 (Fig. 9). During'the first part of the forwar'd'movement of the soles for the second time, the roll 209 rides up on the high part of the cam 211 whereby the work table is 7 raised and held raised during the forming of the thin flaps 200 on the soles. Just at the end of this second cut, the roll 209 rides down again upon the low part of the cam 211 thus relieving the pressure upon the I soles during the withdrawal of the soles from 263, said latter gear being fast to the shaft of an electric motor 265. Referring now to Fig. 1, the gear 257, which is driven in the direction indicated by the arrow has internal teeth 267 which may be engaged by a dog 269 semi-circular in outline carried by a small shaft 271 which is rotatably mounted in a driven member 273, said member being pinned to the shaft 69. On the outside of the driven member 273 and fast to one end T of the small shaft 271, which carries at its other end the dog 269, is a catch 275 which is held in the position shown when the machine is at rest by engagement of an arm 277, said arm being carried by a hub which is loose on thesha-ft 47, the hub having a projeeting lug to which is pivotally attached a treadle rod 279. The lower end of the treadle rod 279 is connected to a treadle 281 by a non-repeat mechanism of well-known construction (Fig. 1) which will not be described in detail. It will be understood, however, that when the treadle is depressed the arm 277 (Fig. 4) is first raised and then allowed to fall. WVhen the arm is raised, the catch 27 5 is rotated in a counterclockwise direction by a tension spring 283 which is connected at one end to the catch and at the other to the driven member 273, the extent to which the catch is moved being limited by contact of the stem of a cap screw 285, which i is threaded into the driven member, with the end of a slot formed in the catch. When the catch 275 is thus rotated, the dog 269 is moved angularly into position to be engaged by the internal teeth 267 of the gear 257 and rotation is imparted to the shaft 69. When the arm 277 falls after releasing the catch 275, a roll 287 at the end of the arm runs upon the high part of a cam carried on the periphery of the driven member until nearly one revolution has been completed whereupon the roll rides down upon the low portion of the cam and the arm 277 engages the catch once more to disconnect the driven member 273 from the driving gear 257. As

thus far described the clutch is a one-revolution clutch of well-known construction.

In the present machine, the arm 27 7 is held up in inoperative position until near the end of the second revolution by the movement of the roll 207 (Fig. 7 from the cam 209 to the cam 211. To this end (Fig. 4:) there is fast to the hub of the arm 27 7 a second arm 289 so that the two arms 277, 289 are compelled to move together. This arm 289 projects into the path of sliding movement of the roll 207 so that, when the roll is moved to the right (Fig. 7) before the first revolution of the shaft 69 has been completed, it passes beneath the arm 289 and thus prevents the arm 277 from dropping when, near the end of the first revolution of the shaft 69, it would otherwise be free to drop. Before the end of the second revolution of the shaft the roll 207, as has been explained, is shifted back to the left (Fig. 7) opposite to the cam 209 once more, and in this shifting movement it passes from beneath the arm 289 so that the arm 27 7'is then free to drop and disconnect the shaft 69 at the end of its second revolution.

In some cases it may be desired to produce only one flap on the end of each sole. In such case (Figs. 6 and 7) the plate 247 is lowered, the pin 237 pulled out, and the plate raised until a notch in its top engages the pin. When the roller 235 has thus been pulled out of the cam track 233 and held in this manner, the roll 207 (Fig. 7) is not shifted to the cam 211 during the first revolution of the shaft 69, and consequently the shaft makes only a single revolution. When a single flap is to be made upon each sole the screw 199 (Fig. 4) is backed off into inoperative position, and the level of the work table part of the cam 209. 7 At the end of the forward movement ofthe soles, the roll 207 rides I down upon the low part of the cam to re- A of rotation of the roll is reversed,

lieve the pressure of the feed roll upon the soles. When a single flap is thus formed its thickness depends upon the positionto' which the screw 203 is adjusted in; the end of the horizontal arm of the bell crank lever 201.

Although the invention has beenset forth as embodied in a particular machine, it will be understood that the invention ishot-limited in the scope of its applicationtothe particular machine which has been shown and described. V

The claims of the present application are restricted to the machine, the method and the article produced forming the subject-matter of prior application Serial No. 223,968 which has been referred to above.

Having thus described my invention, what I'claim as new and desire'to secure by Letters Patent of the United States is: j v 1. A machine of the class described having, in combination, a knife, cooperating members one of which is a roll for engaging a blank on opposite sides, first feeding it to the knife and then withdrawing it from the knife, and means for relieving the pressure of the feed members upon the blank during the withdrawal of the blank-"from the knife.

2(A machine of the class described having, in combination, a knife, a table for supporting. a blank, a roll rotatable first. in one direction to feed the blank to the knife and then in the reverse direction to withdraw the blank from the knife, the blank being engaged with a given pressure between the roll and the table during the feeding of the blank to the knife, and means for moving the table away from the roll when the direction 3. machine: of the. olass described having, in combination, a knife, a roll rotatable first in one direction to feed a blank tothe knife and then in the reverse direction; to withdraw the blank from the knife, means for adjusting the pressure of the roll upon theblank, and means for decreasing said pressureregardless of said adjustment when the direction of rotation of the roll is re versed. j

4. A machine of the class described having, in combination, a knife, means including a rotating roll for engaging the blank with a predetermined pressure andfeeding the blank tothe knife to produce a split in the blank, means for reversing. the direction of rotation of the roll to withdraw the split blank from the knife, and means for relieving the pressure of the feeding means upon the blank when said direction: of rotation is reversed.

5. A machine of the class, described hav I ing, in combination, a knife, a blank, means for feeding a blank. over the support to and from the knife a plurality of a support for times to produce a plurality ofcuts, and

means operating to. change the level. of the support between the times that the cuts take place to locate the cuts at different levels in the blank. I V

6. A machine ofthe class described having, in combination, a knife, asupport for a blank, means for feeding a blank over the support to and from'the knife 'a plurality of times to produce a plurality of cuts, said support being mounted forv sliding move.-

ment with respect to the plane of the knife, and'means for imparting sliding movement to the support between the times that the cuts take place, i V i i 7 A machine of the; class described having, in combination, a knife, a support for a blank, automatic means for feedinga blank over the support to .a-ndfrom' the knife a plurality of times to produce a plurality of cuts, and automatic means for changing" the level of the support between the times that the cuts are made to locate the cuts at different levels in the blank. 7 V

8. A .machine of the class described hawin-g, in combination, a knife,a support for a blank, automatic means "for feeding a blank spect to the plane of the knife, and automaticmeans for imparting sliding moveinent to the support between the times that the cuts are made. r

9. A machine of the class described hav ing, in combination,.a knife, means'for feed ing a blank to the knifeto cause the knife. to operate upon theblank and for then withdrawing it therefrom, and means for presenting the blank to the feeding means.

10. A machine of the class described having, in combination, a knife, means for feeding a blank to the knife to cause the knife to: operate upon the blank and for then withdrawing it therefrom,.a presenting slide, and means for operating the slide to present the blank to the feeding means.

11. A machine of the class described hav-- ing, in combination, a knife, means for feeding a sole heel end foremost to the knife to cause the knife to make a cut in the heel end of the sole and then to be withdrawn therefrom, and means for the feeding means; j

12. A machine of the class described .having, in combination, a knife, means for feeding a sole heel end foremost tothe knife: to cause the knife to make a cut in the heel end of the sole and then tobe, withdrawn thereprcsenting the sole to iio its

from, means for presenting the sole to the feeding means, and means for varying the time of presentation of the sole to the feeding means to vary the length of the cut.

13. A machine of the class described having, in combination, a knife, a support for a blank, means for feeding a blank to and from the knife a plurality of times to produce a plurality of cuts, and mechanism for presenting a blank over the support to the feeding means. 7

1A. A machine of the class described having, in combination, a knife, a support for a blank, means for feeding a blank to and from the knife a plurality of times to produce a plurality of cuts, and mechanism operated by the feeding means for presenting a blank over the support to the feeding means.

15. A machine of the class described having, in combination, a knife, a support for a blank, means for feeding the blank to and from the knife a plurality of times to produce a plurality of cuts, a feed slide, and means for operating the feed slide a plurality of times to present the blank to the feed mechanism.

16. A machine of the class described having, in combination, a knife, a feed roll, means for rotating the roll to a given extent first in a direction to present a sole to the knife and then in a direction towithdraw the sole from the knife, a feed slide, means for imparting reciprocation of a given extent to the feed slide, and blank-engaging means adjustable on the feed slide to determine the time of presentation of the blank to the feed roll and thereby the extent of the cut produced by the knife.

17. A machine of the class described having, in combination, a knife, a feed roll, means for rotating the roll a plurality of times first in one direction and then in the other to feed a blank a plurality of times to and from the knife, mechanism for presenting the blank to the feed roll, and means for operating said mechanism from said roll.

18. A machine of the class described having, in combination, a knife, and a table over which the work is fed to the knife, one edge of the table being located in proximity to the edge of the knife, said table being angularly adjustable in a path at an angle to the plane of the knife to bring the edge of the table into parallelism with the edge of the knife.

19. A machine of the class described having, in combination, a knife having a straight operative cutting edge, a table over which the work is fed to the knife, and means for mounting the table for swinging movement in a path at an angle to the plane of the knife to permit the edge of the table adjacent to the knife to be adjusted into parallelism with the edge of the knife.

20. A machine of the class described having, in combination, a Work support presenting an unyielding gaging edge over which a blank is fed, a knife having its cutting edge close to but above the gaging edge, an internally yieldable roll located to bear upon the work adjacent to the gaging edge, means for feeding the blank to and from the knife a plurality of times to produce in the blank a plurality of cuts, and means operating to change the relative levels of the gaging edge and the knife edge between the times the cuts are made.

21. A machine of the class described having, in'combination, a knife, a support for the blank, and means for pressing the blank against the support, the support and the knife being relatively movable in the direction of extent of the plane of the support first to cause the knife to enter the blank and then to be withdrawn therefrom, said support and knife being also relatively movable in a direction at an angle to the first-named direction to relieve the pressure upon the blank during the withdrawal of the knife.

22. A machine of the class described having, in combination, a knife, a support for a blank and means for pressing the blank against the support and for causing relative movement between the support and the knife first to cause the knife to enter the blank and then to be withdrawn therefrom, said support and knife being also relatively movable to relieve the pressure upon the blank during the withdrawal of the knife.

23. A machine of the class described having, in combination, a knife, a support for a sole, means for pressing the sole against the support and for moving the sole over the suplort first to cause the knife to enter the sole to form a flap thereon and then to be withdrawn from the sole, and means for relieving the pressure upon the sole during the withdrawal of the knife.

24. A machine of the class described having, in combination, a knife, a stationary support for a blank, means for pressing the blank against the support and for feeding the blank over the support first in a direction to cause the knife to enter the blank and then in a direction to cause the knife to be withdrawn from the blank, and means for increasing the distance between the support and the pressing and feeding means to facilitate the withdrawal of the knife.

25. A machine of the class described having, in combination, a knife, means for causing a blank to be operated upon by the knife a plurality of times to form a plurality of flaps thereon, and means becoming operative between the operations of the knife to change the relative positions of the blank and the knife in such manner as to cause one flap to be thicker than another.

26. A machine of the class described having, in combination, a knife, a support for a blank, means for-first feeding" the blankto V and-then withdrawingit fromthe knife to cause theTknife to form a plurality of'flaps on the blank, andmeans becoming. operative between the cutting operations of the knife. for changing the level of thesupport in such if manner as to cause one flap to be thicker than Y W another.

27. A machine of the class described-have .ing, in combination, a knife, means for'causin g the knife to enter a blank and to be withdrawn therefrom twice so asto operate twice upon the blank, means for maintainingthe blank and the knife during the firstoperation in position to cause the knife to form aflap V l on the blank, andmeans' for changing the i relative positions of the-knife and the blank prior to the'second operation to cause the knife to split the flapjformed'by the first operation.

28. Amachine of the class described having, in combination, a knife, 7 g means for feeding the Work to the knife, a depending member by which the work, table is supported, and a carrierupon whichthe a' work table,

depending member is mounted for movement in a pat-hat an angle to the plane of the lmife, said carrier being mounted for angular movementin a plane also at an angle to the plane of the knife 29. A machine ofthe class, described having, in combination, a knife, means for feeding a blank to the'knife and withdrawing it therefrom to produceva flap thereon, and a member adjustable intodifferent positions to cause theblank to be fed to and withdrawn from the knife a single time at a given level or a pluralit In testimony whereofI have signed my name to this specification.

. WILLIAM C. BAXTERL yof times atdifi'erent' levels a S may be desired. i u 40 

